I have been on the wrong dose of thyroxine to correct underactice since treatment for an overactive thyroid gland (Iodine treatment). I now know I should have been on 50 mcg but have been prescribed and taking 100 mcgs for 6 months. I have dropped two dress sizes from a size 10 and my hair is breaking and falling out; I also feel fatigued. I would like to stop taking the thyroxine immediately to allow an initial drop in my body and then begin taking at the right dose as it will take weeks to get he new dose to take effect and I look anorexic. The hair breakage and loss has always been a problem but worse currently. Any advice? Thanks.